Stahlblech und nach dem Verzinken Wärmebehandeltes Stahlblech
Anmelder: Nippon Steel Corporation 🇯🇵
Details
- Veröffentlichungs-Nr.
- EP4759952
- Anmeldetag
- 7. Mai 2024
- Veröffentlichung
- 13. Februar 2025
- Rechtsraum
- EP
Abstract
The present invention has as its object the provision of a steel sheet and hot dip galvannealed steel sheet excellent in LME resistance. The steel sheet of the present invention has a tensile strength of 780 MPa or more a depth where an emission intensity Bx at a depth x (µm) and an emission intensity B150 at a depth of 150 µm measured by GDS measurement in a thickness direction of the steel sheet satisfy Bx/B150 ≥ 5.0 is 0.5 µm or more from a surface of the steel sheet; a thickness of oxides formed on the surface of the steel sheet is 0.5 µm or less; and an internal oxidation layer of a thickness of 1.0 µm or more in a exists thickness direction of the steel sheet from the surface of the steel sheet. Further, the hot dip galvannealed steel sheet of the present invention comprises a hot dip galvannealed layer at least at part of the surface of the steel sheet and has a thickness of oxides formed at the surface of the hot dip galvannealed layer of 0.5 µm or less.
Anmelder
- Firma
- Nippon Steel Corporation
- Land
- 🇯🇵 Japan
Japanischer Stahlkonzern mit Sitz in Tokio, einer der größten Stahlhersteller der Welt. Aktiv in der Produktion von Stahl für Automobilbau, Bauwesen und Schiffbau sowie in Werkstoff- und Verfahrenstechnik.
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